1 files changed, 434 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/omap3/board.c b/arch/arm/mach-omap2/omap3/board.c
new file mode 100644
index 0000000000..5f5597772b
--- /dev/null
+++ b/arch/arm/mach-omap2/omap3/board.c
@@ -0,0 +1,434 @@
+/*
+ *
+ * Common board functions for OMAP3 based boards.
+ *
+ * (C) Copyright 2004-2008
+ * Texas Instruments, <www.ti.com>
+ *
+ * Author :
+ *      Sunil Kumar <sunilsaini05@gmail.com>
+ *      Shashi Ranjan <shashiranjanmca05@gmail.com>
+ *
+ * Derived from Beagle Board and 3430 SDP code by
+ *      Richard Woodruff <r-woodruff2@ti.com>
+ *      Syed Mohammed Khasim <khasim@ti.com>
+ *
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <common.h>
+#include <dm.h>
+#include <spl.h>
+#include <asm/io.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/mem.h>
+#include <asm/cache.h>
+#include <asm/armv7.h>
+#include <asm/gpio.h>
+#include <asm/omap_common.h>
+#include <linux/compiler.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* Declarations */
+extern omap3_sysinfo sysinfo;
+#ifndef CONFIG_SYS_L2CACHE_OFF
+static void omap3_invalidate_l2_cache_secure(void);
+#endif
+
+#ifdef CONFIG_DM_GPIO
+static const struct omap_gpio_platdata omap34xx_gpio[] = {
+	{ 0, OMAP34XX_GPIO1_BASE },
+	{ 1, OMAP34XX_GPIO2_BASE },
+	{ 2, OMAP34XX_GPIO3_BASE },
+	{ 3, OMAP34XX_GPIO4_BASE },
+	{ 4, OMAP34XX_GPIO5_BASE },
+	{ 5, OMAP34XX_GPIO6_BASE },
+};
+
+U_BOOT_DEVICES(am33xx_gpios) = {
+	{ "gpio_omap", &omap34xx_gpio[0] },
+	{ "gpio_omap", &omap34xx_gpio[1] },
+	{ "gpio_omap", &omap34xx_gpio[2] },
+	{ "gpio_omap", &omap34xx_gpio[3] },
+	{ "gpio_omap", &omap34xx_gpio[4] },
+	{ "gpio_omap", &omap34xx_gpio[5] },
+};
+
+#else
+
+static const struct gpio_bank gpio_bank_34xx[6] = {
+	{ (void *)OMAP34XX_GPIO1_BASE },
+	{ (void *)OMAP34XX_GPIO2_BASE },
+	{ (void *)OMAP34XX_GPIO3_BASE },
+	{ (void *)OMAP34XX_GPIO4_BASE },
+	{ (void *)OMAP34XX_GPIO5_BASE },
+	{ (void *)OMAP34XX_GPIO6_BASE },
+};
+
+const struct gpio_bank *const omap_gpio_bank = gpio_bank_34xx;
+
+#endif
+
+/******************************************************************************
+ * Routine: secure_unlock
+ * Description: Setup security registers for access
+ *              (GP Device only)
+ *****************************************************************************/
+void secure_unlock_mem(void)
+{
+	struct pm *pm_rt_ape_base = (struct pm *)PM_RT_APE_BASE_ADDR_ARM;
+	struct pm *pm_gpmc_base = (struct pm *)PM_GPMC_BASE_ADDR_ARM;
+	struct pm *pm_ocm_ram_base = (struct pm *)PM_OCM_RAM_BASE_ADDR_ARM;
+	struct pm *pm_iva2_base = (struct pm *)PM_IVA2_BASE_ADDR_ARM;
+	struct sms *sms_base = (struct sms *)OMAP34XX_SMS_BASE;
+
+	/* Protection Module Register Target APE (PM_RT) */
+	writel(UNLOCK_1, &pm_rt_ape_base->req_info_permission_1);
+	writel(UNLOCK_1, &pm_rt_ape_base->read_permission_0);
+	writel(UNLOCK_1, &pm_rt_ape_base->wirte_permission_0);
+	writel(UNLOCK_2, &pm_rt_ape_base->addr_match_1);
+
+	writel(UNLOCK_3, &pm_gpmc_base->req_info_permission_0);
+	writel(UNLOCK_3, &pm_gpmc_base->read_permission_0);
+	writel(UNLOCK_3, &pm_gpmc_base->wirte_permission_0);
+
+	writel(UNLOCK_3, &pm_ocm_ram_base->req_info_permission_0);
+	writel(UNLOCK_3, &pm_ocm_ram_base->read_permission_0);
+	writel(UNLOCK_3, &pm_ocm_ram_base->wirte_permission_0);
+	writel(UNLOCK_2, &pm_ocm_ram_base->addr_match_2);
+
+	/* IVA Changes */
+	writel(UNLOCK_3, &pm_iva2_base->req_info_permission_0);
+	writel(UNLOCK_3, &pm_iva2_base->read_permission_0);
+	writel(UNLOCK_3, &pm_iva2_base->wirte_permission_0);
+
+	/* SDRC region 0 public */
+	writel(UNLOCK_1, &sms_base->rg_att0);
+}
+
+/******************************************************************************
+ * Routine: secureworld_exit()
+ * Description: If chip is EMU and boot type is external
+ *		configure secure registers and exit secure world
+ *              general use.
+ *****************************************************************************/
+void secureworld_exit(void)
+{
+	unsigned long i;
+
+	/* configure non-secure access control register */
+	__asm__ __volatile__("mrc p15, 0, %0, c1, c1, 2":"=r"(i));
+	/* enabling co-processor CP10 and CP11 accesses in NS world */
+	__asm__ __volatile__("orr %0, %0, #0xC00":"=r"(i));
+	/*
+	 * allow allocation of locked TLBs and L2 lines in NS world
+	 * allow use of PLE registers in NS world also
+	 */
+	__asm__ __volatile__("orr %0, %0, #0x70000":"=r"(i));
+	__asm__ __volatile__("mcr p15, 0, %0, c1, c1, 2":"=r"(i));
+
+	/* Enable ASA in ACR register */
+	__asm__ __volatile__("mrc p15, 0, %0, c1, c0, 1":"=r"(i));
+	__asm__ __volatile__("orr %0, %0, #0x10":"=r"(i));
+	__asm__ __volatile__("mcr p15, 0, %0, c1, c0, 1":"=r"(i));
+
+	/* Exiting secure world */
+	__asm__ __volatile__("mrc p15, 0, %0, c1, c1, 0":"=r"(i));
+	__asm__ __volatile__("orr %0, %0, #0x31":"=r"(i));
+	__asm__ __volatile__("mcr p15, 0, %0, c1, c1, 0":"=r"(i));
+}
+
+/******************************************************************************
+ * Routine: try_unlock_sram()
+ * Description: If chip is GP/EMU(special) type, unlock the SRAM for
+ *              general use.
+ *****************************************************************************/
+void try_unlock_memory(void)
+{
+	int mode;
+	int in_sdram = is_running_in_sdram();
+
+	/*
+	 * if GP device unlock device SRAM for general use
+	 * secure code breaks for Secure/Emulation device - HS/E/T
+	 */
+	mode = get_device_type();
+	if (mode == GP_DEVICE)
+		secure_unlock_mem();
+
+	/*
+	 * If device is EMU and boot is XIP external booting
+	 * Unlock firewalls and disable L2 and put chip
+	 * out of secure world
+	 *
+	 * Assuming memories are unlocked by the demon who put us in SDRAM
+	 */
+	if ((mode <= EMU_DEVICE) && (get_boot_type() == 0x1F)
+	    && (!in_sdram)) {
+		secure_unlock_mem();
+		secureworld_exit();
+	}
+
+	return;
+}
+
+/******************************************************************************
+ * Routine: s_init
+ * Description: Does early system init of muxing and clocks.
+ *              - Called path is with SRAM stack.
+ *****************************************************************************/
+void s_init(void)
+{
+	watchdog_init();
+
+	try_unlock_memory();
+
+#ifndef CONFIG_SYS_L2CACHE_OFF
+	/* Invalidate L2-cache from secure mode */
+	omap3_invalidate_l2_cache_secure();
+#endif
+
+	set_muxconf_regs();
+	sdelay(100);
+
+	prcm_init();
+
+	per_clocks_enable();
+
+#ifdef CONFIG_USB_EHCI_OMAP
+	ehci_clocks_enable();
+#endif
+}
+
+#ifdef CONFIG_SPL_BUILD
+void board_init_f(ulong dummy)
+{
+	mem_init();
+}
+#endif
+
+/*
+ * Routine: misc_init_r
+ * Description: A basic misc_init_r that just displays the die ID
+ */
+int __weak misc_init_r(void)
+{
+	omap_die_id_display();
+
+	return 0;
+}
+
+/******************************************************************************
+ * Routine: wait_for_command_complete
+ * Description: Wait for posting to finish on watchdog
+ *****************************************************************************/
+static void wait_for_command_complete(struct watchdog *wd_base)
+{
+	int pending = 1;
+	do {
+		pending = readl(&wd_base->wwps);
+	} while (pending);
+}
+
+/******************************************************************************
+ * Routine: watchdog_init
+ * Description: Shut down watch dogs
+ *****************************************************************************/
+void watchdog_init(void)
+{
+	struct watchdog *wd2_base = (struct watchdog *)WD2_BASE;
+	struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
+
+	/*
+	 * There are 3 watch dogs WD1=Secure, WD2=MPU, WD3=IVA. WD1 is
+	 * either taken care of by ROM (HS/EMU) or not accessible (GP).
+	 * We need to take care of WD2-MPU or take a PRCM reset. WD3
+	 * should not be running and does not generate a PRCM reset.
+	 */
+
+	setbits_le32(&prcm_base->fclken_wkup, 0x20);
+	setbits_le32(&prcm_base->iclken_wkup, 0x20);
+	wait_on_value(ST_WDT2, 0x20, &prcm_base->idlest_wkup, 5);
+
+	writel(WD_UNLOCK1, &wd2_base->wspr);
+	wait_for_command_complete(wd2_base);
+	writel(WD_UNLOCK2, &wd2_base->wspr);
+}
+
+/******************************************************************************
+ * Dummy function to handle errors for EABI incompatibility
+ *****************************************************************************/
+void abort(void)
+{
+}
+
+#if defined(CONFIG_NAND_OMAP_GPMC) & !defined(CONFIG_SPL_BUILD)
+/******************************************************************************
+ * OMAP3 specific command to switch between NAND HW and SW ecc
+ *****************************************************************************/
+static int do_switch_ecc(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
+{
+	if (argc < 2 || argc > 3)
+		goto usage;
+
+	if (strncmp(argv[1], "hw", 2) == 0) {
+		if (argc == 2) {
+			omap_nand_switch_ecc(1, 1);
+		} else {
+			if (strncmp(argv[2], "hamming", 7) == 0)
+				omap_nand_switch_ecc(1, 1);
+			else if (strncmp(argv[2], "bch8", 4) == 0)
+				omap_nand_switch_ecc(1, 8);
+			else if (strncmp(argv[2], "bch16", 5) == 0)
+				omap_nand_switch_ecc(1, 16);
+			else
+				goto usage;
+		}
+	} else if (strncmp(argv[1], "sw", 2) == 0) {
+		if (argc == 2) {
+			omap_nand_switch_ecc(0, 1);
+		} else {
+			if (strncmp(argv[2], "hamming", 7) == 0)
+				omap_nand_switch_ecc(0, 1);
+			else if (strncmp(argv[2], "bch8", 4) == 0)
+				omap_nand_switch_ecc(0, 8);
+			else
+				goto usage;
+		}
+	} else {
+		goto usage;
+	}
+
+	return 0;
+
+usage:
+	printf ("Usage: nandecc %s\n", cmdtp->usage);
+	return 1;
+}
+
+U_BOOT_CMD(
+	nandecc, 3, 1,	do_switch_ecc,
+	"switch OMAP3 NAND ECC calculation algorithm",
+	"hw [hamming|bch8|bch16] - Switch between NAND hardware 1-bit hamming"
+	" and 8-bit/16-bit BCH\n"
+	"                           ecc calculation (second parameter may"
+	" be omitted).\n"
+	"nandecc sw               - Switch to NAND software ecc algorithm."
+);
+
+#endif /* CONFIG_NAND_OMAP_GPMC & !CONFIG_SPL_BUILD */
+
+#ifdef CONFIG_DISPLAY_BOARDINFO
+/**
+ * Print board information
+ */
+int checkboard (void)
+{
+	char *mem_s ;
+
+	if (is_mem_sdr())
+		mem_s = "mSDR";
+	else
+		mem_s = "LPDDR";
+
+	printf("%s + %s/%s\n", sysinfo.board_string, mem_s,
+			sysinfo.nand_string);
+
+	return 0;
+}
+#endif	/* CONFIG_DISPLAY_BOARDINFO */
+
+static void omap3_emu_romcode_call(u32 service_id, u32 *parameters)
+{
+	u32 i, num_params = *parameters;
+	u32 *sram_scratch_space = (u32 *)OMAP3_PUBLIC_SRAM_SCRATCH_AREA;
+
+	/*
+	 * copy the parameters to an un-cached area to avoid coherency
+	 * issues
+	 */
+	for (i = 0; i < num_params; i++) {
+		__raw_writel(*parameters, sram_scratch_space);
+		parameters++;
+		sram_scratch_space++;
+	}
+
+	/* Now make the PPA call */
+	do_omap3_emu_romcode_call(service_id, OMAP3_PUBLIC_SRAM_SCRATCH_AREA);
+}
+
+void __weak omap3_set_aux_cr_secure(u32 acr)
+{
+	struct emu_hal_params emu_romcode_params;
+
+	emu_romcode_params.num_params = 1;
+	emu_romcode_params.param1 = acr;
+	omap3_emu_romcode_call(OMAP3_EMU_HAL_API_WRITE_ACR,
+			       (u32 *)&emu_romcode_params);
+}
+
+void v7_arch_cp15_set_acr(u32 acr, u32 cpu_midr, u32 cpu_rev_comb,
+			  u32 cpu_variant, u32 cpu_rev)
+{
+	/* Write ACR - affects secure banked bits */
+	if (get_device_type() == GP_DEVICE)
+		omap_smc1(OMAP3_GP_ROMCODE_API_WRITE_ACR, acr);
+	else
+		omap3_set_aux_cr_secure(acr);
+
+	/* Write ACR - affects non-secure banked bits - some erratas need it */
+	asm volatile ("mcr p15, 0, %0, c1, c0, 1" : : "r" (acr));
+}
+
+
+#ifndef CONFIG_SYS_L2CACHE_OFF
+static void omap3_update_aux_cr(u32 set_bits, u32 clear_bits)
+{
+	u32 acr;
+
+	/* Read ACR */
+	asm volatile ("mrc p15, 0, %0, c1, c0, 1" : "=r" (acr));
+	acr &= ~clear_bits;
+	acr |= set_bits;
+	v7_arch_cp15_set_acr(acr, 0, 0, 0, 0);
+
+}
+
+/* Invalidate the entire L2 cache from secure mode */
+static void omap3_invalidate_l2_cache_secure(void)
+{
+	if (get_device_type() == GP_DEVICE) {
+		omap_smc1(OMAP3_GP_ROMCODE_API_L2_INVAL, 0);
+	} else {
+		struct emu_hal_params emu_romcode_params;
+		emu_romcode_params.num_params = 1;
+		emu_romcode_params.param1 = 0;
+		omap3_emu_romcode_call(OMAP3_EMU_HAL_API_L2_INVAL,
+				       (u32 *)&emu_romcode_params);
+	}
+}
+
+void v7_outer_cache_enable(void)
+{
+
+	/*
+	 * Set L2EN
+	 * On some revisions L2EN bit is banked on some revisions it's not
+	 * No harm in setting both banked bits(in fact this is required
+	 * by an erratum)
+	 */
+	omap3_update_aux_cr(0x2, 0);
+}
+
+void omap3_outer_cache_disable(void)
+{
+	/*
+	 * Clear L2EN
+	 * On some revisions L2EN bit is banked on some revisions it's not
+	 * No harm in clearing both banked bits(in fact this is required
+	 * by an erratum)
+	 */
+	omap3_update_aux_cr(0, 0x2);
+}
+#endif /* !CONFIG_SYS_L2CACHE_OFF */